﻿<!DOCTYPE html>
<html>
<head>
  <title>Thermometer</title>
  <!-- Copyright 1998-2021 by Northwoods Software Corporation. -->
  <meta name="description" content="A thermometer." />
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="../release/go.js"></script>
  <script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script id="code">
    function init() {
      if (window.goSamples) goSamples();  // init for these samples -- you don"t need to call this
      var $ = go.GraphObject.make;

      myDiagram = $(go.Diagram, "myDiagramDiv",
        {
          layout: $(go.GridLayout, { isOngoing: false, wrappingColumn: 4 }),
          "animationManager.isEnabled": false,
          "undoManager.isEnabled": true
        });

      // ResizingTool customization: add just one handle, instead of eight
      myDiagram.toolManager.resizingTool.makeAdornment = function(resizeObj) {
        return $(go.Adornment, "Spot",
                  {
                    locationSpot: go.Spot.Center,
                    category: this.name,
                    adornedObject: resizeObj
                   },
                  $(go.Placeholder),
                  this.makeHandle(resizeObj, go.Spot.Top)
                );
      }

      var ORIGINAL_HEIGHT = 400;

      /* The thermometer node consists of a Spot Panel with 6 children:
          0: The BarSpace, which is the main element and
          1: The Farenheit scale, on the left
          2: The Celsius scale, on the right
          3: The shape that represents alcohol or mercury in the thermometer
          4: (Cosmetic) The stem that attaches to the bulb
          5: (Cosmetic) The bulb

          The two Graduated Panels use alignmentFocusName to make sure their main Shapes
          line up with the Spot Panel"s main element, BarSpace.

          1|0|2
          1|0|2
          1|0|2
          1|0|2
          1|3|2
          1|3|2
           |4|
           |5|
      */

      myDiagram.nodeTemplate =
        $(go.Node, "Spot",
          { resizable: true, resizeObjectName: "BarSpace", locationObjectName: "Bulb", locationSpot: go.Spot.Center },

          $(go.Shape,
            { name: "BarSpace", width: 25, height: ORIGINAL_HEIGHT, strokeWidth: 0, fill: "rgba(0,0,0,.05)" },
            new go.Binding("height").makeTwoWay()
          ),

          // Farenheit scale, on the left:
          $(go.Panel, "Graduated",
            {
              background: "white",
              graduatedMin: -40, graduatedMax: 80,
              graduatedTickBase: 0, graduatedTickUnit: 1,
              alignment: go.Spot.BottomLeft,
              alignmentFocus: go.Spot.BottomLeft,
              alignmentFocusName: "line"
            },
            new go.Binding("graduatedMax", "", function(data) {
              if (data.type === "scaling") return 80;
              return (data.height * 0.3) - 40;
            }),
            $(go.Shape, { name: "line", geometryString: "M0 0 V-" + ORIGINAL_HEIGHT, stroke: "gray" },
              new go.Binding("height")),
            $(go.Shape, { alignmentFocus: go.Spot.Bottom, interval: 2, strokeWidth: 1, geometryString: "M0 0 V15" }),
            $(go.Shape, { alignmentFocus: go.Spot.Bottom, interval: 10, strokeWidth: 2, geometryString: "M0 0 V20" }),
            $(go.TextBlock, { interval: 20, font: "22px Georgia", alignmentFocus: new go.Spot(1, 0.5, 20, 0) }),
            // Mark 32 degrees on the farenheit scale:
            $(go.TextBlock, {
              interval: 32, graduatedFunction: function(n) { return n === 32 ? "32—" : "" },
              font: "bold 12px Georgia", stroke: "red", alignmentFocus: new go.Spot(1, 0.5, 20, 0)
            })
          ),

          // Mercury/alcohol bar, which represents the values of farenheit and celsius
          $(go.Shape,
            {
              width: 25, strokeWidth: 0, fill: "red",
              alignment: go.Spot.Bottom,
              alignmentFocus: go.Spot.Bottom,
            },
            new go.Binding('fill', 'type', function(t) { return t === "scaling" ? "dimgray" : "red" }),
            // To determine the level, look at both data.farenheit and data.celsius, but prefer celsius
            new go.Binding("height", "", function(data) {
              var thermometerHeight = ORIGINAL_HEIGHT;
              if (data.type === "scaling") thermometerHeight = data.height;
              if (data.celsius !== undefined) {
                // (celsius + minimum value) / (total celsius range) * height
                return Math.max(0, ((data.celsius + 40) / 67) * thermometerHeight);
              } else if (data.farenheit !== undefined) {
                // (farenheit + minimum value) / (total farenheit range) * height
                return Math.max(0, ((data.farenheit + 40) / 120) * thermometerHeight);
              } else {
                return 0;
              }
            }),
            new go.Binding("maxSize", "height", function(h) { return new go.Size(NaN, h) })
          ),

          // Celsius scale, on the right:
          $(go.Panel, "Graduated",
            {
              background: "white",
              // -40 to 27 because we picked -40 to 80 for farenheit, and want them to line up
              graduatedMin: -40, graduatedMax: 27,
              graduatedTickBase: 0, graduatedTickUnit: 1,
              alignment: go.Spot.BottomRight,
              alignmentFocus: go.Spot.BottomRight,
              alignmentFocusName: "line2"
            },
            new go.Binding("graduatedMax", "", function(data) {
              if (data.type === "scaling") return 27;
              return (data.height * 0.1675) - 40;
            }),

            $(go.Shape, { name: "line2", geometryString: "M0 0 V-" + ORIGINAL_HEIGHT, stroke: "gray" },
              new go.Binding("height")),
            $(go.Shape, { interval: 2, strokeWidth: 1, geometryString: "M0 0 V15" }),
            $(go.Shape, { interval: 10, strokeWidth: 2, geometryString: "M0 0 V20" }),
            $(go.TextBlock, {
              interval: 20, textAlign: "left", font: "22px Georgia",
              alignmentFocus: go.Spot.Left, segmentOffset: new go.Point(0, 22)
            })
          ),

          // Cosmetic: The stem and bulb
          $(go.Shape,
            {
              width: 25, height: 10, strokeWidth: 0, fill: "red",
              alignment: go.Spot.Bottom
            },
            new go.Binding('fill', 'type', function(t) { return t === "scaling" ? "dimgray" : "red" })
          ),
          $(go.Shape, "Circle",
            {
              name: "Bulb",
              width: 55, height: 55, strokeWidth: 0, fill: "red",
              alignment: go.Spot.Bottom,
              alignmentFocus: go.Spot.Top,
            },
            new go.Binding('fill', 'type', function(t) { return t === "scaling" ? "dimgray" : "red" })
          )
        ); // end node template

      myDiagram.model = new go.GraphLinksModel(
        [
          { height: 400, celsius: 20 },
          { height: 250, celsius: -10 },

          { type: "scaling", height: 400, farenheit: 22 /*, celsius: 0*/ },
          { type: "scaling", height: 250, farenheit: 68 /*, celsius: 20*/ },
        ]);
    }
  </script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px black; width:800px; height:500px"></div>
  <p>
    This sample uses <a href="../intro/graduatedPanels.html">Graduated Panels</a> and <code>Panel.alignmentFocusName</code> to line up thermometer scales.
  </p>
  <p>
    The thermometers are resizable, with two types. For the first two (default), resizing the thermometer reduces
    or increases the range of the values. For the second two (<code>type: "scaling"</code>), resizing
    the thermometer keeps the range, and scales the thermometer.
  </p>
</div>
</body>
</html>